I got mandatory training in Microsoft Office as part of the state curriculum for highschoolers. I don't think basic training really promotes lock-in with Office suites. (well, except for Excel, but that's a programming environment)

It's surprising how non-obvious office suites are, because I regularly see people in a professional setting who don't know how to use them well enough. However, I don't really think training in any particular office suite isn't transferable, since the major skill is knowing what the ruler, styles, and various line/page breaks are actually there for apparently. I had no trouble using LibreOffice or whatever, but people definitely don't seem to know the concepts of word processing well at all. This isn't their fault, as it does /kinda/ work even if you just keep slamming shit into the page until it's right.

Forcing people to work it out on their own is just training people to put up with "I don't know, I got it to look right but if I put a space between these words my entire layout breaks 4 pages later." when they don't have to live like this.